Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB848403752Aexternal-prioritypatent/GB8403752D0/en
Priority claimed from GB848403751Aexternal-prioritypatent/GB8403751D0/en
Application filed by Sherritt Gordon Mines LtdfiledCriticalSherritt Gordon Mines Ltd
Priority claimed from EP19850300957external-prioritypatent/EP0156482B1/de
Application grantedgrantedCritical
Publication of ATE43363T1publicationCriticalpatent/ATE43363T1/de